Acoustical ceiling panel



FIG. 1 is a reduced perspective view of an acoustical ceiling panel showing my new design;

FIG. 2 is a plan view of a portion of the acoustical ceiling panel of FIG. 1 at substantially actual size; and

FIG. 3 is a perspective view of a portion of the acoustical ceiling panel of FIG. 1 at the substantially actual size. 

The ornamental design for an acoustical ceiling panel, substantially as shown. 